Well I am going to start my own thread........
Out of interest I am wondering what sort of speed people have been getting out of wings around the 900sqcm size.......maybe not pro riders (although I would be interested) but normal average recreation foilers.
Thanks

Am foiling at an inland lake here in belgium. I saw here somebody with neil pryde F4 racing foil and an 8,2 rs racing sail doing betweeen 40 and 43km/u on his gps watch in 10 to 15kn wind. On the 900 wing.is not a big lake so building op speed is not so easy. Longest runs are like 800m distance only.

I Normally foil a Naish HA 914 with normally the 310 stab. (they specify a 280 stab for the 914 front wing but i like the 310 more). I don't specifically foil for speed. I'm a freeride lake foiler on a 105L Slingshot Wizard, and use small wave sails up to 4.7. I've been told a few times that i'm doing around 20 - 25 knots.

Could maybe go faster with the smaller 280 stab. Getting a 90L Wizard soon too which might have the ability to go faster. Not that i really need to go any faster, but i get the feeling that there's more speed in the 914 than i'm currently getting from it. I'm not sure though.

The iqfoil is 900cm2. High speeds were 32kn at Silvaplana last year (fresh water) and around 29kn at Garda (again fresh water) this year using the Sailmon trackers on a smoking reach. AUS-123 (Berowne) does 25kn downwind on his big F4 set on Botany Bay (salt water).

I have achieved 20knts with my starboard 900 front wing on a 115 fuselage and a 8 m2 sail
I haven't realy got that comfortable with it yet and struggle to maintain a level flight as the speed increases so am reluctant to realy go for it at the moment I think a maximum for that foil might be 24knt but interested in others experience

Garry has a 950cm2 wing, along with a lot of others. He only uses the 950 with 8.6 & 9.6 sails, so reckon he could go faster with the 950 but has the 730 he uses when its windier.
22.53 10 sec average in very little wind.
www.gps-foilsurfing.com/default.aspx?mnu=user&val=368889&uid=18265

This is my best session on my Patrik foil so far with the 900 wing. I doubt I can get it over 25.


By no means fast compared to some of our locals in WA but fast enough to be exciting. Just as a gauge I am 56, overweight and well past my best. 40+ years windsurfing the last 4 mainly on the foil.

I don't get it.......why bust a nut trying to go fast....? Foil when there is bugger all wind, if its windy go slapper - and faster.

But as a big guy who is considering foiling and will be wanting big wings I wanna know why Martin is asking.....? Designing stuff....?

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Mark _australia said..
I don't get it.......why bust a nut trying to go fast....? Foil when there is bugger all wind, if its windy go slapper - and faster.

But as a big guy who is considering foiling and will be wanting big wings I wanna know why Martin is asking.....? Designing stuff....?

That's not busting a nut. Wind was 14-17 with a 7m foil race sail.
When panadol osteo is part of your daily diet foiling is a lot less painfull. That speed on a foil is just as exciting as 35 on dead flat water.
At 99kg a 900 wing is plenty big enough for me with an 8m in 10-14 kn. As long as you can gybe very little pumping is required once up on the foil.

Interesting I thought I'd need 1000m2 ish front at 105kegs
(135L learner board)

Me: 21-22 knots regularly on 900 and 9.0 without really pushing hard. Usually rear foot out of strap going downwind. Garmin watch measured.
However the young guys on IqFoil setup are getting closer to 30 knots at peak with the same setup. So big difference in skill and will to push.

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Mark _australia said..
I don't get it.......why bust a nut trying to go fast....? Foil when there is bugger all wind, if its windy go slapper - and faster.

But as a big guy who is considering foiling and will be wanting big wings I wanna know why Martin is asking.....? Designing stuff....?

You are on to me Mark..yes designing stuff. Trying to get an idea of what sort of speeds are being done on 900 wings as I need to make some decisions between some different proto wings. Speed vs early foiling blah blah.

And why bust your nuts going fast...I LOVE speed.

Agree with you swindy.......my just on 23 knots on Port Phillip Bay on a Foil ( far from flat water) makes doing 44 knots at Lake George on a speed board seem like a Sunday Cruise.

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Mark _australia said..
Interesting I thought I'd need 1000m2 ish front at 105kegs
(135L learner board)

Not wanting to derail this thread, happy to answer questions elsewhere.

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Swindy said..

Mark _australia said..
Interesting I thought I'd need 1000m2 ish front at 105kegs
(135L learner board)

Not wanting to derail this thread, happy to answer questions elsewhere.

Derail one of my threads and incure the the wroth of a grumpy old man

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Mark _australia said..
I don't get it.......why bust a nut trying to go fast....? Foil when there is bugger all wind, if its windy go slapper - and faster.

Because it's what humans do. Whatever we're on, we want to go faster.



Staying on topic: around 22 kts so far but I'm old, light and get skeered sending it with big sails. Should try it with smaller gear sometime but usually am in play time (freeride foil/sails) when that happens. fwiw personal choice for a freerace/race quiver to cover light to strong would be 950-900/750-700/something small. Obviously the 9** wings are going to be slowest but for those of us in wind challenged spots, really useful and contribute a good number of foiling days per year.

A 900 cm2 wing is really only designed for light wind course racing not speed. In a typical course race setup you are getting around 18 knots upwind and 20 / 25 downwind. Lightwind slalom wings are around 700/750cm2 and will do 30 knots.

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Sambo # said..
I Normally foil a Naish HA 914 with normally the 310 stab. (they specify a 280 stab for the 914 front wing but i like the 310 more). I don't specifically foil for speed. I'm a freeride lake foiler on a 105L Slingshot Wizard, and use small wave sails up to 4.7. I've been told a few times that i'm doing around 20 - 25 knots.

Could maybe go faster with the smaller 280 stab. Getting a 90L Wizard soon too which might have the ability to go faster. Not that i really need to go any faster, but i get the feeling that there's more speed in the 914 than i'm currently getting from it. I'm not sure though.

Would be interested to hear how the wizard 105 compares to the 90L, especially for schlogging and get up and go.

On freeride or wave gear you should be able to hit 20kts if you design it well. But building a wing that can carve nicely while be in total control seem harder then building a wing that can go fast in a straight line and obviously the other factors like fuse size and stab play a key roll but front wing is probably most important part of the foil.

My top speed is just over 30 knots on both the F-One Levo carbon (880cm2) and loke race M (872cm2)

Loke Race M (2021) is 760; the L (2021) is 840

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mr love said..
Well I am going to start my own thread........
Out of interest I am wondering what sort of speed people have been getting out of wings around the 900sqcm size.......maybe not pro riders (although I would be interested) but normal average recreation foilers.
Thanks

Here is a good link to some live speeds from the pro's on IQ setups from Sailmon. See a few 28 knots peaks mid race.
www.facebook.com/groups/1377152212346239/permalink/5333348636726557/

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bel29 said..
Loke Race M (2021) is 760; the L (2021) is 840

Im talking the previous version. Definately 872cm2. Could have been the old 'L' size though. Was the bigger of the two wings I had, designed for courseracing and got me flying in 5-7 knots with 9.0m2.

Yes, the 2021 L is more high aspect than the original 2020 version; I have both. 30 knots on either is pretty impressive though, and especially on the original version icw the 105 mast. The M that's a different story; icw the 95 mast it's very fast, still one of my favorite combos

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CAN17 said..

Sambo # said..
I Normally foil a Naish HA 914 with normally the 310 stab. (they specify a 280 stab for the 914 front wing but i like the 310 more). I don't specifically foil for speed. I'm a freeride lake foiler on a 105L Slingshot Wizard, and use small wave sails up to 4.7. I've been told a few times that i'm doing around 20 - 25 knots.

Could maybe go faster with the smaller 280 stab. Getting a 90L Wizard soon too which might have the ability to go faster. Not that i really need to go any faster, but i get the feeling that there's more speed in the 914 than i'm currently getting from it. I'm not sure though.

Would be interested to hear how the wizard 105 compares to the 90L, especially for schlogging and get up and go.

On freeride or wave gear you should be able to hit 20kts if you design it well. But building a wing that can carve nicely while be in total control seem harder then building a wing that can go fast in a straight line and obviously the other factors like fuse size and stab play a key roll but front wing is probably most important part of the foil.

When I get the 90L on the water I'll let u know.

MAX of 2s VMax per front wing
337cm2 30.2
420cm2 25.4
560cm2 27.5
620cm2 26.8
850cm2 26.0
945cm2 25.8

So 'just' 26 knots for 900 wings give or take. Pretty happy with that but ideal flat water conditions. It'll take a bit more to get comfortable in swell at these speeds!

IQ foil setup (900FW 115+) managed to get a 10 second average of 26 knots. I've had a few 2 second max speeds over that but when I export the .gpx files from Garmin and run it through GPSResults software I find some funky data so I disregard those results.

Same as Sambo, I have recently got the Naish 914 wing , I have taken it to just over 20 knts 2sec. avg, measured with approved gps. I have used a 131 Freeride board and small sails, max. size 4.4 , not racing gear. It definitely has the potential to reach 23-25 in the right conditions.
I say that because my best speed is about 21.5, done with a bigger wing (1150) with lower aspect.
Here all the sessions with the 914HA:
martignoni.id.au/summary_fin.php?fin=Naish-S26-914HA&sort=date

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Mark _australia said..
Interesting I thought I'd need 1000m2 ish front at 105kegs
(135L learner board)

You're right, at least to start with, and bigger yet is better yet. at 102kg I use a 1250 and a 2000 and only recently am I able to get the 1250 pumped up in winds as light as the 2000 can foil in. The bigger wings are draggy for sure, but they don't overpower as much as you'd think in any kind of reasonable windstrength. For one thing you can adjust the stab for less lift if you're getting blasted. However, starting on a really small wing can lead to all kinds of bad habits, especially planing the board before asking the foil to lift. The big thrill is getting foiling before the board would plane.

I'd like a 900 (or 800!) but I'd likely only use it in 25+ and I have other priorities.

As far as speed, I've got the 1250 to 24mph according to a Garmin watch, and that seems accurate. The 2000 has averaged just under 20 over a half mile stretch but I don't know what its top speed was.

I only really ever use the 900 wing as i use the IQ Foil setup and my fastest speed so far is just over 23 knots (which feels like 40 knots). I could go faster but not really comfortable doing it. Some of the young guys i race get over 26 knots on the 900 front wing but they are braver than me and bounce better when they hit the water at speed in a crash.

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Mark _australia said..
I don't get it.......why bust a nut trying to go fast....? Foil when there is bugger all wind, if its windy go slapper - and faster.

But as a big guy who is considering foiling and will be wanting big wings I wanna know why Martin is asking.....? Designing stuff....?

I agree, 10-15 kts foil , below surf, above fin. Looking forward to foiling in the surf with a sail

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kato said..

Mark _australia said..
I don't get it.......why bust a nut trying to go fast....? Foil when there is bugger all wind, if its windy go slapper - and faster.

I agree, 10-15 kts foil , below surf, above fin. Looking forward to foiling in the surf with a sail

That's the same everyone thinks in the beginning, but as you progress to stronger wind, you will find that going back to the fin and big sail feels heavy and dull, so next time you try foiling with a bit more wind etc.
Said that, still nothing beats flat water speed sailing for me.

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kato said..

Mark _australia said..
I don't get it.......why bust a nut trying to go fast....? Foil when there is bugger all wind, if its windy go slapper - and faster.

But as a big guy who is considering foiling and will be wanting big wings I wanna know why Martin is asking.....? Designing stuff....?

I agree, 10-15 kts foil , below surf, above fin. Looking forward to foiling in the surf with a sail

You do it because its a challenge, just like everything else you challenge yourself to do. Because you can.